is_tag( mixed $tag = '' )

Determines whether the query is for an existing tag archive page.

Contents

Description Description

If the $tag parameter is specified, this function will additionally check if the query is for one of the tags specified.

For more information on this and similar theme functions, check out the Conditional Tags article in the Theme Developer Handbook.

Parameters Parameters

$tag

(mixed) (Optional) Tag ID, name, slug, or array of Tag IDs, names, and slugs.

Default value: ''

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Return Return

(bool)

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Source Source

File: wp-includes/query.php 

function is_tag( $tag = '' ) {
	global $wp_query;

	if ( ! isset( $wp_query ) ) {
		_doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' );
		return false;
	}

	return $wp_query->is_tag( $tag );
}

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Changelog Changelog

Changelog
Version Description
2.3.0 Introduced.

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Uses Uses

Uses
Uses Description
wp-includes/l10n.php: __()

Retrieve the translation of $text.
wp-includes/class-wp-query.php: WP_Query::is_tag()

Is the query for an existing tag archive page?
wp-includes/functions.php: _doing_it_wrong()

Mark something as being incorrectly called.

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Used By Used By

Used By
Used By Description
wp-includes/general-template.php: wp_get_document_title()

Returns document title for the current page.
wp-includes/general-template.php: get_the_archive_title()

Retrieve the archive title based on the queried object.
wp-includes/category-template.php: term_description()

Retrieve term description.
wp-includes/category-template.php: wp_list_categories()

Display or retrieve the HTML list of categories.
wp-includes/general-template.php: feed_links_extra()

Display the links to the extra feeds such as category feeds.
wp-includes/general-template.php: wp_title()

Display or retrieve page title for all areas of blog.
wp-includes/general-template.php: single_term_title()

Display or retrieve page title for taxonomy term archive.
wp-includes/class-wp.php: WP::handle_404()

Set the Headers for 404, if nothing is found for requested URL.
wp-includes/post-template.php: get_body_class()

Retrieves an array of the class names for the body element.
wp-includes/canonical.php: redirect_canonical()

Redirects incoming links to the proper URL based on the site url.
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User Contributed Notes User Contributed Notes

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    Contributed by Codex —

    Examples

    // When any Tag archive page is being displayed.
is_tag();

// When the archive page for Tag 30 is being displayed.
is_tag( '30' );

// When the archive page for tag with the Slug of 'extreme' is being displayed.
is_tag( 'extreme' );

// When the archive page for tag with the Name of 'mild' is being displayed.
is_tag( 'mild' );

/*
 * Returns true when the tag of posts being displayed is either term_ID 30,
 * or slug "extreme", or name "mild". Note: the array ability was added
 * at Version 3.7.
 */
is_tag( array( 30, 'mild', 'extreme' ) );

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